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How is input and output is similar?

Input is where you add somthing eg.) a picture and output is sending it to someone.


What is meant by non inverting amplifier?

There is no such thing as an inverting or a non-inverting op amp.All op amps have both an inverting input and a non-inverting input. Their operation is such that the output will go to whatever value is required to make both inputs be the same. This implies feedback from output to inverting input.


What is the relationship between energy input energy output and energy losses whenever transfer of energy takes place?

Energy input = energy output + losses. Both energy output and losses are usually positive (they might also be zero in some specific cases), meaning that (usually) each of them individually is less than the energy input.


Why cin and cout are iostream objects?

Most programs require both input and output. By including iostream you gain access to both, along with the most common datatypes and functions within the standard library. If you don't require all the features provided, you can include only what you need instead.


What is the application of IC 4001?

It's a "quad, 2 input nor gate". To understand the significance of a "nor" gate, you need to understand a little about digital logic. An "or" gate takes 2 or more digital inputs and if either is "on", the output will be on. (asserted high). A "nor" gate inverts the output of the "or" gate, meaning that when either of the outputs are "on", the output will be "off" (asserted low). The two input part of the description just indicates that it only accepts two inputs. So, simply stated: If either (or both) input(s) of a quad, 2 input nor gate is (are) asserted high, the output will be low. If both inputs are off (low), the output will be high.